.ka-whatsapp-btn {
  position: fixed;
  bottom: 20px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #25D366;
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.5);
  text-decoration: none;
  transition: transform 0.15s ease;
}

.ka-whatsapp-btn:hover,
.ka-whatsapp-btn:focus-visible {
  transform: scale(1.06);
  color: #fff;
}

.ka-whatsapp-btn--right {
  right: 20px;
}

.ka-whatsapp-btn--left {
  left: 20px;
}

@media (max-width: 640px) {
  .ka-whatsapp-btn {
    width: 48px;
    height: 48px;
    bottom: 16px;
  }

  .ka-whatsapp-btn--right {
    right: 16px;
  }

  .ka-whatsapp-btn--left {
    left: 16px;
  }
}